This ticket is a part of #816 and will be used to add a new doc titled "Privacy" under Chapter 7: Advanced Topics.

Note that this single doc is a wholesale replacement of the current Theme Privacy chapter/page in the handbook and moves it under Advanced Topics as a sub-page.

The new draft for this page with updated text and some new content is drafted in a Google Doc: https://docs.google.com/document/d/1s-2slh3NrO2padUItBtbE60E0FMAJ5w1_wRme3SCJfc/edit?usp=sharing